Increase of enamel fluoride retention by low fluence argon laser beam: A 6-month follow-up study in vivo

Nammour, Samir; Rocca, Jean‐Paul; Pireaux, J. J.; Powell, Glen; Morciaux, Y.; Demortier, G.

doi:10.1002/lsm.20128

Cited by 31 publications

(22 citation statements)

References 23 publications

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“…Additionally, the use of a fluoride varnish or gel before irradiation may convert enamel hydroxyapatite into fluoridated hydroxyapatite, reducing enamel solubility and allowing the irradiated surface to retain fluoride ions longer than non-irradiated enamel (3,14).…”

Section: Discussionmentioning

confidence: 99%

“…The reason for that effect is that subablative low-energy laser irradiation and fluoride treatment may instantaneously transform enamel hydroxyapatite into fluoridated hydroxyapatite, reducing enamel solubility and preventing enamel demineralization (3). Additionally, laser irradiated enamel may retain fluoride ions longer than non-irradiated enamel, increasing its resistance to demineralization over time (14).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Surface Roughness and Bacterial Adhesion on Tooth Enamel Irradiated With High Intensity Lasers

et al. 2017

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The aim was to evaluate the surface roughness and bacterial adhesion on enamel irradiated with high intensity lasers, associated or not to a fluoride varnish. Eighty fragments of bovine enamel were equally divided in 8 groups (n=10). Group 1 was not treated and Group 2 received only a 5% fluoride varnish application. The other groups were irradiated with an Er:Cr:YSGG (8.92 J/cm 2 ), an Nd:YAG (84.9 J/cm 2 ) and a diode laser (199.04 J/cm 2 ), associated or not to a 5% fluoride varnish. The surface roughness was measured before and after treatments. Afterward, all samples were incubated in a suspension of S. mutans at 37 °C for 24 h. The colony-forming units (CFU) were counted by a stereoscope and the results were expressed in CFU/mm 2 . One-way ANOVA and the Tukey´s test compared the roughness data and the Student´s test compared the results obtained in the bacterial adhesion test (α=5%). The results showed that the irradiated samples without varnish presented the same roughness and the same bacterial adhesion that the non-irradiated samples. However, samples irradiated in the presence of fluoride varnish showed higher surface roughness and higher bacterial adhesion than the non-irradiated samples and those irradiated without varnish. Presence of pigments in the varnish increased the lasers' action on the enamel surface, which produced ablation in this hard tissue and significantly increased its surface roughness. For this reason, the enamel's susceptibility to bacterial adhesion was higher when the irradiation of the samples was made in presence of fluoride varnish.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Surface Roughness and Bacterial Adhesion on Tooth Enamel Irradiated With High Intensity Lasers

et al. 2017

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“…The reduced acid solubility of dental enamel after irradiation with high-intensity lasers has been well documented in literature, 4,[20][21][22][42][43][44][45][46][47] and this change is related to the physical and chemical alterations caused by photothermal and photochemical effects. 46 It is well known that intrinsic factors of the laser source (wavelength, emission mode, pulse energy, spot size, pulse duration, and application method on the tissue) and external parameters (energy density and time exposition) are relevant to understanding the mechanism of interaction between the laser and biological tissue.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies [20][21][22]43,46,47 emphasize the use of different lasers in association with various forms of fluoride for the reduction of demineralization. The laser is applied to fluoride to increase fluoride diffusibility, which promotes greater ion absorption in the enamel or favors ion linking in the adjacent area.…”

Section: Enamel Irradiated With Infrared Laser: Edx Studymentioning

confidence: 99%

Dental Enamel Irradiated with Infrared Diode Laser and Photo-Absorbing Cream: Part 2—EDX Study

Sant'Anna

Santos

Soares

et al. 2009

Photomedicine and Laser Surgery

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Objective: The effects of laser-induced compositional changes on the enamel were investigated by energydispersive X-ray fluorescence spectrometry (m-EDX). After cariogenic challenge, we administered treatment of low-level infrared diode laser and a photo-absorbing cream (used to intensify the superficial light absorption). Background Data: Dental caries is considered the most prevalent oral disease. A simple and noninvasive caries preventive regimen is treating tooth enamel with a laser, either alone or in combination with fluoride, which reduces enamel solubility and dissolution rates. High power lasers are still not widely used in private practice. Low-power near-infrared lasers may be an alternative approach. Energy-dispersive m-EDX is a versatile and nondestructive spectroscopic technique that allows for a qualitative and quantitative elemental analysis of inorganic enamel components, such as calcium and phosphorus. Materials and Methods: Twenty-four extracted or exfoliated caries-free deciduous molars were divided into six groups: 1) control group (CTR-no treatment); 2) infrared laser treatment (L) (l ¼ 810 nm, 100 mW=cm 2 , 90 sec, 4.47 J=cm 2 , 9 J); 3) infrared laser irradiation and photo-absorbing agent (CL); 4) photo-absorbing agent alone (C); 5) infrared laser irradiation and fluoridated photo-absorbing agent (FCL); and 6) fluoridated photo-absorbing agent alone (FC). Samples were analyzed using m-EDX after two sets of treatments and pH cycling cariogenic challenges. Results: The CL group showed statistically significant increases in calcium and phosphorus (wt%) compared with the CTR group. The Ca=P ratio was similar in the FCL and CTR groups. There was a significant laser-induced reduction compared with the CTR group, and there was a possible modification of the organic balance content in enamel treated with laser and cream. Conclusion: m-EDX may be able to detect compositional changes in mineral phases of lased enamel under cariogenic challenge. Our results suggest that with a combined laser and photo-absorbing agent (CL) treatment, there was a possible disorganization of organic content in the tooth enamel with hydroxyapatite crystal reordering and reorganization.

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“…A morfologia dos glóbulos observados no experimento in vitro, em todos os Grupos tratados com produtos fluoretados, está em acordo com a Literatura [Nelson, 1983]. Os microrradiografias eletrônicas deste trabalho permitiam a mensuração aproximada da circunferência dos glóbulos de CaF 2 a partir de uma barra dimensional.…”

Section: 11-análise Morfológica Por Microscopia Eletrônica De Varrunclassified

Estudo in situ da resistência à desmineralização do esmalte dental submetido à irradiação com laser Er,Cr:YSGG associada ao uso de produtos fluoretados

Zamataro¹

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Increase of enamel fluoride retention by low fluence argon laser beam: A 6-month follow-up study in vivo

Cited by 31 publications

References 23 publications

Evaluation of Surface Roughness and Bacterial Adhesion on Tooth Enamel Irradiated With High Intensity Lasers

Evaluation of Surface Roughness and Bacterial Adhesion on Tooth Enamel Irradiated With High Intensity Lasers

Dental Enamel Irradiated with Infrared Diode Laser and Photo-Absorbing Cream: Part 2—EDX Study

Estudo in situ da resistência à desmineralização do esmalte dental submetido à irradiação com laser Er,Cr:YSGG associada ao uso de produtos fluoretados

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